Added some extensions for KeyGroups

CUE.NET.csproj

@@ -85,6 +85,7 @@
     <Compile Include="Devices\Keyboard\CorsairKeyboard.cs" />
     <Compile Include="Devices\Mouse\CorsairMouseDeviceInfo.cs" />
     <Compile Include="Devices\Mouse\CorsairMouse.cs" />
+    <Compile Include="Devices\Keyboard\Extensions\KeyGroupExtension.cs" />
     <Compile Include="Helper\RectangleHelper.cs" />
     <Compile Include="Native\_CorsairDeviceInfo.cs" />
     <Compile Include="Native\_CorsairLedColor.cs" />

Devices/Keyboard/CorsairKeyboard.cs

@@ -92,19 +92,20 @@ namespace CUE.NET.Devices.Keyboard
             base.UpdateLeds(forceUpdate);
         }
 
-        public void AttachKeyGroup(IKeyGroup keyGroup)
+        public bool AttachKeyGroup(IKeyGroup keyGroup)
         {
-            if (keyGroup == null) return;
+            if (keyGroup == null || _keyGroups.Contains(keyGroup)) return false;
 
-            if (!_keyGroups.Contains(keyGroup))
             _keyGroups.Add(keyGroup);
+            return true;
         }
 
-        public void DetachKeyGroup(IKeyGroup keyGroup)
+        public bool DetachKeyGroup(IKeyGroup keyGroup)
         {
-            if (keyGroup == null) return;
+            if (keyGroup == null || !_keyGroups.Contains(keyGroup)) return false;
 
             _keyGroups.Remove(keyGroup);
+            return true;
         }
 
         private void InitializeKeys()

Devices/Keyboard/Extensions/KeyGroupExtension.cs

@@ -0,0 +1,46 @@
+using System.Linq;
+using CUE.NET.Devices.Keyboard.Enums;
+using CUE.NET.Devices.Keyboard.Keys;
+
+namespace CUE.NET.Devices.Keyboard.Extensions
+{
+    public static class KeyGroupExtension
+    {
+        public static SimpleKeyGroup ToSimpleKeyGroup(this BaseKeyGroup keyGroup)
+        {
+            SimpleKeyGroup simpleKeyGroup = keyGroup as SimpleKeyGroup;
+            if (simpleKeyGroup == null)
+            {
+                bool wasAttached = keyGroup.Detach();
+                simpleKeyGroup = new SimpleKeyGroup(keyGroup.Keyboard, wasAttached, keyGroup.Keys.ToArray()) { Color = keyGroup.Color };
+            }
+            return simpleKeyGroup;
+        }
+
+        public static SimpleKeyGroup Exclude(this BaseKeyGroup keyGroup, params CorsairKeyboardKeyId[] keyIds)
+        {
+            SimpleKeyGroup simpleKeyGroup = keyGroup.ToSimpleKeyGroup();
+            foreach (CorsairKeyboardKeyId keyId in keyIds)
+                simpleKeyGroup.RemoveKey(keyId);
+            return simpleKeyGroup;
+        }
+
+        public static SimpleKeyGroup Exclude(this BaseKeyGroup keyGroup, params CorsairKey[] keyIds)
+        {
+            SimpleKeyGroup simpleKeyGroup = keyGroup.ToSimpleKeyGroup();
+            foreach (CorsairKey key in keyIds)
+                simpleKeyGroup.RemoveKey(key);
+            return simpleKeyGroup;
+        }
+
+        public static bool Attach(this BaseKeyGroup keyGroup)
+        {
+            return keyGroup.Keyboard?.AttachKeyGroup(keyGroup) ?? false;
+        }
+
+        public static bool Detach(this BaseKeyGroup keyGroup)
+        {
+            return keyGroup.Keyboard?.DetachKeyGroup(keyGroup) ?? false;
+        }
+    }
+}

Devices/Keyboard/Keys/BaseKeyGroup.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Drawing;
+using CUE.NET.Devices.Keyboard.Extensions;
 
 namespace CUE.NET.Devices.Keyboard.Keys
 {
@@ -8,7 +9,7 @@ namespace CUE.NET.Devices.Keyboard.Keys
     {
         #region Properties & Fields
 
-        protected CorsairKeyboard Keyboard { get; }
+        internal CorsairKeyboard Keyboard { get; }
 
         public IEnumerable<CorsairKey> Keys => new ReadOnlyCollection<CorsairKey>(GroupKeys);
         protected IList<CorsairKey> GroupKeys { get; } = new List<CorsairKey>();
@@ -24,18 +25,7 @@ namespace CUE.NET.Devices.Keyboard.Keys
             this.Keyboard = keyboard;
 
             if (autoAttach)
-                keyboard.AttachKeyGroup(this);
-        }
-
-        #endregion
-
-        #region Methods
-
-        public void MergeKeys(IKeyGroup groupToMerge)
-        {
-            foreach (CorsairKey key in groupToMerge.Keys)
-                if (!GroupKeys.Contains(key))
-                    GroupKeys.Add(key);
+                this.Attach();
         }
 
         #endregion

Devices/Keyboard/Keys/SimpleKeyGroup.cs

@@ -6,18 +6,26 @@ namespace CUE.NET.Devices.Keyboard.Keys
     {
         #region Constructors
 
-        public SimpleKeyGroup(CorsairKeyboard keyboard)
-            : base(keyboard)
+        public SimpleKeyGroup(CorsairKeyboard keyboard, bool autoAttach = true)
+            : base(keyboard, autoAttach)
         { }
 
         public SimpleKeyGroup(CorsairKeyboard keyboard, params CorsairKey[] keys)
-            : base(keyboard)
+            : this(keyboard, true, keys)
+        { }
+
+        public SimpleKeyGroup(CorsairKeyboard keyboard, bool autoAttach, params CorsairKey[] keys)
+            : base(keyboard, autoAttach)
         {
             AddKey(keys);
         }
 
         public SimpleKeyGroup(CorsairKeyboard keyboard, params CorsairKeyboardKeyId[] keys)
-            : base(keyboard)
+            : this(keyboard, true, keys)
+        { }
+
+        public SimpleKeyGroup(CorsairKeyboard keyboard, bool autoAttach, params CorsairKeyboardKeyId[] keys)
+            : base(keyboard, autoAttach)
         {
             AddKey(keys);
         }
@@ -67,6 +75,13 @@ namespace CUE.NET.Devices.Keyboard.Keys
             return ContainsKey(Keyboard[keyId]);
         }
 
+        public void MergeKeys(IKeyGroup groupToMerge)
+        {
+            foreach (CorsairKey key in groupToMerge.Keys)
+                if (!GroupKeys.Contains(key))
+                    GroupKeys.Add(key);
+        }
+
         #endregion
     }
 }

Examples/SimpleDevTest/Program.cs

@@ -7,6 +7,7 @@ using CUE.NET;
 using CUE.NET.Devices.Generic.Enums;
 using CUE.NET.Devices.Keyboard;
 using CUE.NET.Devices.Keyboard.Enums;
+using CUE.NET.Devices.Keyboard.Extensions;
 using CUE.NET.Devices.Keyboard.Keys;
 using CUE.NET.Exceptions;
 
@@ -34,9 +35,11 @@ namespace SimpleDevTest
                 if (keyboard == null)
                     throw new WrapperException("No keyboard found");
 
-                //Ink all numbers on the keypad purple
-                RectangleKeyGroup purpleGroup = new RectangleKeyGroup(keyboard, CorsairKeyboardKeyId.Keypad7, CorsairKeyboardKeyId.Keypad3)
-                { Color = Color.Purple };
+                //Ink all numbers on the keypad except the '5' purple, we want that to be gray
+                SimpleKeyGroup purpleGroup = new RectangleKeyGroup(keyboard, CorsairKeyboardKeyId.Keypad7, CorsairKeyboardKeyId.Keypad3)
+                { Color = Color.Purple }
+                .Exclude(CorsairKeyboardKeyId.Keypad5);
+                keyboard[CorsairKeyboardKeyId.Keypad5].Led.Color = Color.Gray;
 
                 // Ink the Keys 'r', 'g', 'b' in their respective color
                 // The char access seems to fail for everything except letters (SDK doesn't return a valid keyId)
@@ -77,9 +80,9 @@ namespace SimpleDevTest
                 Random random = new Random();
 
                 // Remove all the groups we created above to clear the keyboard
-                keyboard.DetachKeyGroup(purpleGroup);
-                keyboard.DetachKeyGroup(whiteGroup);
-                keyboard.DetachKeyGroup(yellowGroup);
+                purpleGroup.Detach();
+                whiteGroup.Detach();
+                yellowGroup.Detach();
 
                 // Flash whole keyboard three times to ... well ... just to make it happen
                 for (int i = 0; i < 3; i++)